diff --git a/account/api.py b/account/api.py
index 4f1e410..517d450 100644
--- a/account/api.py
+++ b/account/api.py
@@ -20,7 +20,7 @@ router = Router()
 @router.post("/register")
 def user_register(request, payload: UserRegistrationSchema):
     if User.objects.filter(username=payload.username).exists():
-        return HttpError(400, "用户已存在")
+        raise HttpError(400, "用户已存在")
     User.objects.create_user(
         username=payload.username,
         email=payload.email,
@@ -36,7 +36,7 @@ def user_login(request, payload: UserLoginSchema):
         login(request, user)
         return {"username": user.username, "role": user.role}
     else:
-        return HttpError(401, "账号密码错误")
+        raise HttpError(401, "账号密码错误")
 
 
 @router.post("/logout")
@@ -78,7 +78,7 @@ def batch_create(request, payload: BatchUsersIn):
         usernames.append(username)
     existing_users = User.objects.filter(username__in=usernames)
     if existing_users.exists():
-        return HttpError(400, "有些用户已经存在，创建失败")
+        raise HttpError(400, "有些用户已经存在，创建失败")
 
     for username in usernames:
         digits = [str(random.randint(2, 9)) for _ in range(6)]
@@ -102,4 +102,4 @@ def toggle_user_is_active(request, id: int):
             "message": f"{user.username} {'解封' if user.is_active else '封号'}成功"
         }
     except User.DoesNotExist:
-        return HttpError(404, "查无此人")
+        raise HttpError(404, "查无此人")
diff --git a/account/decorators.py b/account/decorators.py
index f5c20e9..06f3906 100644
--- a/account/decorators.py
+++ b/account/decorators.py
@@ -11,12 +11,12 @@ def _require(roles):
         @wraps(func)
         def wrapper(request, *args, **kwargs):
             if not request.user.is_authenticated:
-                return HttpError(401, "用户未登录")
+                raise HttpError(401, "用户未登录")
             try:
                 if request.user.role not in roles:
-                    return HttpError(403, "你没有权限")
+                    raise HttpError(403, "你没有权限")
             except User.DoesNotExist:
-                return HttpError(404, "用户不存在")
+                raise HttpError(404, "用户不存在")
             return func(request, *args, **kwargs)
 
         return wrapper
diff --git a/task/migrations/0002_alter_task_display.py b/task/migrations/0002_alter_task_display.py
new file mode 100644
index 0000000..75bc56c
--- /dev/null
+++ b/task/migrations/0002_alter_task_display.py
@@ -0,0 +1,18 @@
+# Generated by Django 5.1.6 on 2025-03-10 10:38
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('task', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='task',
+            name='display',
+            field=models.IntegerField(db_index=True, unique=True),
+        ),
+    ]
diff --git a/task/models.py b/task/models.py
index cbf64aa..e2464e1 100644
--- a/task/models.py
+++ b/task/models.py
@@ -8,7 +8,7 @@ class Task(TimeStampedModel):
         ("tutorial", "Tutorial"),
     ]
 
-    display = models.IntegerField(unique=True)
+    display = models.IntegerField(unique=True, db_index=True)
     title = models.CharField(max_length=100)
     content = models.TextField()
     task_type = models.CharField(
diff --git a/task/tutorial.py b/task/tutorial.py
index ef204a1..b88c270 100644
--- a/task/tutorial.py
+++ b/task/tutorial.py
@@ -20,11 +20,11 @@ def get_all_public_display(request):
 
 
 @router.get("/{display}", response=TutorialAll)
-def get(request, display: int):
+async def get(request, display: int):
     try:
-        return Tutorial.objects.get(display=display)
+        return await Tutorial.objects.aget(display=display)
     except Tutorial.DoesNotExist:
-        return HttpError(404, "此序号无教程")
+        raise HttpError(404, "此序号无教程")
 
 
 @router.post("/")
@@ -35,7 +35,7 @@ def create_or_update(request, payload: TutorialIn):
         item.title = payload.title
         item.content = payload.content
         item.is_public = payload.is_public
-        item.save()
+        item.asave()
         return {"message": "更新成功"}
     except Tutorial.DoesNotExist:
         Tutorial.objects.create(**payload.dict())
@@ -48,11 +48,11 @@ def toggle_public(request, display: int):
     try:
         item = Tutorial.objects.get(display=display)
         item.is_public = not item.is_public
-        item.save()
+        item.asave()
         label = "公开" if item.is_public else "隐藏"
         return {"message": f"【{item.display}】{item.title} 已{label}"}
     except Tutorial.DoesNotExist:
-        return HttpError(404, "此序号无教程")
+        raise HttpError(404, "此序号无教程")
 
 
 @router.delete("/{display}")